* [**Breaking Change**]: Remove prometheus-fetcher plugin, please use OpenTelemetry to scrape Prometheus metrics and
   set up SkyWalking OpenTelemetry receiver instead.
 * BugFix: histogram metrics sent to MAL should be treated as OpenTelemetry style, not Prometheus style:
   ```
   (-infinity, explicit_bounds[i]] for i == 0
   (explicit_bounds[i-1], explicit_bounds[i]] for 0 < i < size(explicit_bounds)
   (explicit_bounds[i-1], +infinity) for i == size(explicit_bounds)
   ```

* [**Breaking Change**] Support sharding MySQL database instances and tables by [Shardingsphere-Proxy](https://shardingsphere.apache.org/document/current/en/overview/#shardingsphere-proxy).
  SQL-Database requires removing tables `log_tag/segment_tag/zipkin_query` before OAP starts, if bump up from previous releases.

* Fix meter functions `avgHistogram`, `avgHistogramPercentile`, `avgLabeled`, `sumHistogram` having data conflict when downsampling. FYI @jinho-son thanks for reporting.
* Do sorting `readLabeledMetricsValues` result forcedly in case the storage(database) doesn't return data consistent with the parameter list.

Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Remove `responseCode` fields of all OAL sources, as well as examples to avoid user's confusion. (#9638)

Support analyzing cache related spans to provide metrics and slow commands for cache services from client side. (#9622)

* Support analyzing cache related spans to provide metrics and slow commands for cache services from client side
* Optimize virtual database, fix dynamic config watcher NPE when default value is null 
* [UI] Add virtual cache dashboard

* Remove physical index existing check

* Make sure instance list ordered in TTL processor to avoid TTL timer never runs.

* Polish the endpoint list graph.
* Fix styles for an adaptive height.
* Fix setting up a new time range after clicking the refresh button.
* Enhance the process topology graph to support dragging nodes.

UI-template: Fix metrics calculation in `general-service/mesh-service/faas-function` top-list dashboard. (#9610)

* Fix metrics calculation in `general-service/mesh-service/faas-function` top-list dashboard

* changes.md

* [maven-release-plugin] prepare release v9.2.0

* [maven-release-plugin] prepare for next development iteration

* Create changes-9.2.0.md

* Update changes.md

* Update LICENSE